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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 5 — Mar. 1, 2013
  • pp: 628–630

High-order photonic differentiator employing on-chip cascaded microring resonators

Jianji Dong, Aoling Zheng, Dingshan Gao, Shasha Liao, Lei Lei, Dexiu Huang, and Xinliang Zhang  »View Author Affiliations

Optics Letters, Vol. 38, Issue 5, pp. 628-630 (2013)

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We propose and experimentally demonstrate a high-order photonic differentiator using on-chip complementary metal oxide semiconductor-compatible cascaded microring resonators, including first-, second-, and third-order differentiators. All the microring resonator units have a radius of 150 μm and a free spectral range of 80 GHz. The microring resonator can implement the first-order derivative of the optical field near its critical coupling region. Hence higher-order differentiation can be obtained by cascading more microring units on a single chip. For the periodical Gaussian optical pulse injection, the average deviations of all differentiators are less than 6.2%. The differentiation of pseudo-random bit sequence signals at 5Gbit/s is also demonstrated. Our scheme is a compact and low-power-consumption solution since the cascaded microring units are fabricated with compact size on the silicon-on-insulator substrate.

© 2013 Optical Society of America

OCIS Codes
(200.3050) Optics in computing : Information processing
(200.4560) Optics in computing : Optical data processing
(230.1150) Optical devices : All-optical devices

ToC Category:
Optics in Computing

Original Manuscript: November 12, 2012
Revised Manuscript: January 10, 2013
Manuscript Accepted: January 21, 2013
Published: February 21, 2013

Jianji Dong, Aoling Zheng, Dingshan Gao, Shasha Liao, Lei Lei, Dexiu Huang, and Xinliang Zhang, "High-order photonic differentiator employing on-chip cascaded microring resonators," Opt. Lett. 38, 628-630 (2013)

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